Annual report pursuant to Section 13 and 15(d)

Mortgage Notes Payable and Credit Facility - Company's Mortgage Notes Payable and Line of Credit Additional Information (Detail)

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Mortgage Notes Payable and Credit Facility - Company's Mortgage Notes Payable and Line of Credit Additional Information (Detail)
12 Months Ended
Oct. 27, 2017
Dec. 31, 2020
property
mortgage
Debt Instrument [Line Items]    
Weighted average interest rate on debt outstanding (as percent)   3.45%
Encumbered properties   118
LIBOR    
Debt Instrument [Line Items]    
Spread on LIBOR (as percent) 2.75%  
Mortgage notes payable    
Debt Instrument [Line Items]    
Number of mortgage notes payable | mortgage   53
Maturity date of mortgage notes payable, start date   Nov. 01, 2021
Maturity date of mortgage notes payable, end date   Aug. 01, 2037
Weighted average interest rate on debt outstanding (as percent)   4.24%
Encumbered properties   68
Fixed rate mortgage loans    
Debt Instrument [Line Items]    
Stated interest rate (as a percent)   5.19%
Encumbered properties   61
Fixed rate mortgage loans | Minimum    
Debt Instrument [Line Items]    
Stated interest rate (as a percent)   2.80%
Fixed rate mortgage loans | Maximum    
Debt Instrument [Line Items]    
Stated interest rate (as a percent)   6.63%
Variable rate mortgage loans    
Debt Instrument [Line Items]    
Encumbered properties   7
Variable rate mortgage loans | LIBOR    
Debt Instrument [Line Items]    
Variable rate at period end (as percent)   0.14%
Variable rate mortgage loans | Minimum | LIBOR    
Debt Instrument [Line Items]    
Spread on LIBOR (as percent)   2.35%
Variable rate mortgage loans | Maximum | LIBOR    
Debt Instrument [Line Items]    
Spread on LIBOR (as percent)   2.75%
Variable rate revolving credit facility    
Debt Instrument [Line Items]    
Encumbered properties   50
Variable rate revolving credit facility | Revolving credit facility    
Debt Instrument [Line Items]    
Encumbered properties   50
Variable rate revolving credit facility | LIBOR | Revolving credit facility    
Debt Instrument [Line Items]    
Spread on LIBOR (as percent)   1.65%